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(No Model.) 2 Sheets-Shet H. AIKEN. MILL APPLIANCE.

Patented Nov. 4, 1.890.

WITNESSES 0%. in W mvsm on U ITED STATES PATENT OFFICE.

HENRY AIKEN, 0F PITTSBURG, PENNSYLVANIA.

MILL APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 439,829, dated November4, 1890.

Application filed May 8, 1890. Serial No. 3511000. (No model.)

To all whom it may concern.-

Be it known that 'I, HENRY AIKEN, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new and usefulImprovement in Mill Appliances, of which the following is afull, clear,and exact description, reference beinghad to the accompanying drawings,forming part of this specification, in which- Figure 1 is afrontelevation of my improvement, partlyin section. Fig. 2 is a horizontalsection on the line II II of Fig. 1. Fig. 3 is a vertical longitudinalsection of the device on the line III III of Fig. 1. Fig. 4 isa sideelevation, partly in section, of the lower part of the apparatus,showing the parts in a dilferent position.

Like symbols of reference indicate like parts in each.

My invention relates to an improvement in mill appliances. Many of itsparts and elements are of general application in mill machinery, and assuch I intend to claim them, but the invention relates, principally, toan improvement on the apparatus for extracting ingots from their moldsfor which I have already filed a patent application, Serial No. 336,401.The ingot-extractor described and claimed in said application comprisesa stop or resistance device which is applied to the ingot when the moldcontaining it is in an uprightposition,and lifting mechanism which isapplied to the mold to draw or strip it from the ingot. The advantagesof such apparatus are fully stated in the specification of saidapplication. It dispenses with much labor heretofore necessarilyemployed in extracting ingots, saves wear-on the mold, and the mechanismrequired is much less costly than in apparatus of the sort heretoforeused for the same purpose.

In the drawings, 2 represents a jib or elevated track composed ofparallel beams, adapted to accommodate a trolley 3, which is mountedthereon, and which is adapted to be moved back and forth by a hydraulicrack- -ing-cylinder 4.. On this trolley are two vertical cylinders 5,which are set side by side in sockets 3' on the trolley, on which theyare suspended by flanges 5' on the cylinders. Each of the cylinders isprovided with a piston 6 and ram 7, and encircling the latter is apiston 8, having a hollow projecting ram 9. Each ram 9 is provided witha yoke 10, which fits around a shoulder or recessb on the ram, and hasan arm 11 in sliding engagement with a vertical guide-rod 12, dependingfrom the 'truck 3, which rod guides the rams in their vertical motionand prevents them from turning. 4 The yoke 10 is made in two partsbolted together around the ram, as shown in the drawings, and isprovided with depending links 13, adapted to engage lugs 24 on theingot-mold for the purpose of lifting the latter. The cylinders are alsoprovided with arms 11, which are in sliding contact with the guide-rod.Each of the rams 7 has an encircling collar 15, connected by toggle-arms16 to the links 13, and at its lower end is provided with a shoe 17,which is preferably made in sections connected by a ring 17', and istherefore removable, so that if burned by contact with the hot ingots itmay be replaced.

The following is a description of the waterconnections of each of thecylinders 5. A jointed or flexible pipe 18 leads to the cylinder abovethe piston 6. A similar pipe 19 enters the same below the piston S, andfor the purpose of supplying water to the under side of the piston 6, Iemploy a jointed pipe 20, which enters a tube 21 at the end of the cylinder, into which tube projects a pipe 22, which is fixed to the piston,so as to communicate with a passage leading through the same, andextends through a stuffing-box into the tube 21, thereby maintaining aconstant communication between the tube and the under side of the pistoninevery position of the piston in the cylinder.

The reason for the duplication of the parts of the apparatus is that itmay be adapted to extract simultaneously two ingots from their molds,and it should be understood that it is within the scope of my inventionto employ an apparatus having but one cylinder 5 and adapted to extractbut one ingot at a time.

I shall first describe the operation of one of the cylinders inextracting an ingot, and shall then explain the mode of conjoint use ofboth cylinders.

A car 23, carrying an ingot in its mold 25, is brought beneath the track2, and if necessary the trolley 3 is moved, so that the ram 7 shall bedirectly above the ingot, the rams 7 and 9 being first elevated topermit the mold to be carried into such position. This lifting of therams 7 and 9 is effected by admitting water to the cylinder through thepipes 22 and 19. The water entering the pipe 22 acts on the under sideof the piston 6, so as to lift the ram 7 independently of the ram 9 andto draw the shoe 17 up against the collar 15 and the latter against theyoke 10, and then exerts equal opposite pressures on the pistons 6 and8, while the water from the pipe 19, acting on the outer side of thepiston 8, raises the ram 9 and the ram 7, which by reason of the Watercolumn between the pistons 6 and 8 are practically connected. It shouldbe noted that when the ram 7 is lifted independently of themold-lifting'ram 9, as before stated, the engagement of the shoe 17 withthe collar 15 lifts the latter and spreads thelinks into the positionshown in Fig. 4. The mold having been brought into place, the ram 9 islowered by. exhausting the water from the pipe 19, thus bringing thelinks opposite to lugs 24 on the sides of the mold, and the ram 7 is.then thus causing the shoe17 to descend on theingot, as shown in Fig. 3,and the gravity of the collar 15, causing it to drop, draws the linkstogether. against the sides of the mold, so as tofit under. the lugsinthe manner illustrated in Big. 3. The connection of the links bytoggle'l-leverswith the collar serves to equalize the motion of thelinks and to cause them to.

close symmetrically upon the 1nold,the opera tion of engaging the linksbeing entirely pipe 18. is now closed, so as to confine a body of water.above the piston 6 and to prevent i tfro'm, rising, and the valveadmitting water through the pipe19 is opened, thereby causing theentrance of water into the cylinder theram 9, yoke 10, and links 13,which'exert on the mold, a lifting action, and as the ingot is preventedby the ram 7 from rising the mold isstripped from it, leaving itstanding on thecar. If the water-pressure exerted on the. outer face ofthepiston 8 should be insufficient to raise it and to strip the moldfrom the ingot, an increment of pressure may be supplied by admittingwater through the pipelS into the cylinder, which, exertingan upwardpressure on the cylinder, tends to lift it slowly in its, socket 3, andthus, by reason of the bearing of the piston 8 on the lower end of thecylinder, it exerts an additional lifting force on the mold. As soon asthe. frictional resistance of the mold onthe ingot, is thus overcome,the piston 8 will begin to rise, and the water-supply through the pipe18 may be cut off. The cylinder is guided and prevented from turning byreason of the engagement of its arm 11 with the guide-rod12. When themold is freed from the ingot, theexhaust-valve of the pipe 18 is opened,and as the ram 8 continues to ascend it engages the piston 6 and liftsthe ram 7 deposit the mold on such car.

from the ingot. \Vhen the mold has been lifted quite clear of the ingot,the trolley 3 maybe moved, so as to carry the then suspended mold over acar standing in another position. It may be on a second track I), andthe exhaust-valve of the pipe 19 is opened, so as to permit the ram 9 todescend and to I Then to free the links 13 from the mold, the ram 7 israised by water admitted through the pipe 20, so as to cause its shoe 17to engage and lift the collar 15, which, acting on the arms 16, spreadsthe links 13 and frees them from the lugs on the mold. The apparatusthus afiords an efiicient means for extracting ingots withoutnecessitating Subsequent handling either i of the ingot or the mold,andit Will be recog- %nized by those skilled in the art as a most desirablelabor-saving contrivance. constructed as shown in the drawings, theapparatus may be employed for stripping two Iingot-molds at once,both'cylinders' 5 being foperated simnltaneouslyl Its action in thisregard is shown in Fig. 1.

lowered by exhausting water from thepipe 20, 3

When

As a matter of convenience in practice, in-

stead of casting the ingots in the casting-pit @and then lifting themonto the car, I prefer to teem the steel into themolds when the latiterare on the car, and after solidification of 2 thetsteel to bring the carinto position under fthe apparatus. 7 ion a bottom plate resting onthebed of the gear, the mold being held in position by en-. I gagementof its lower edge. with lugs c on the plate.

automatic. The valve in the water-supply To this end I set the moldsMany modifications in the form and rela- Qtive arrangement of: the partsofthe apparatus within the scope of my invention will'sug- .g estthemselves to those skilled in the art, and such modifications I intendtoinclude in the following claims.

below the piston S and raising this piston,

The toggle-levers 1G, in combination with the arms or links 13 and themeans for operating them, the relative arrangement of the pipes 21 and;22, and the exterior guides for the rams or cylinders are devices whichI intend to claim, broadly, as mill appliances with out limitation totheir application to ingotextractingapparatus. For example, thetoggle-levers 16, the arms or links, and the operating mechanism may beused in ingot-tongs, &c. The cylinder 5,its rams, and water-connectionsmay also be used in other apparatus and combinations. 1 also. intend toclaim, broadly, in ingot extracting apparatus a loosely-suspendedcylinder having a plunger and arranged so that on the application ofpressure to the cylinder it shall project the plunger and shall tend toraise the cylinder. It should be noted, also, that unless expresslysostated theclaims relating to thevrams and lifting mechanism are notlimited to the contwo independently-movable rams arranged therein,oneencircling the other, fluid-supply pipes, and lifting appliances securedto one of the rams, substantially as and for the purposes described.

2. The combination of the upright cylinder, two independently-movablerams arranged therein, a fluid-supply pipe entering the cylin-' afluid-supply pipe entering the cylinder at the outerside of the otherram, substantially as and for the purposes described.

3. The combination of the suspended and upwardly-movable uprightcylinder, two 1ndependently-movable rams arranged therein, afluid-supply pipe entering the cylinder and supplying motive fluid toone side of one of the rams, a hollow stem 22, extending through thehead of said ram and supplying motive fluid to the opposite sidethereof, and a fluidsupply pipe entering the cylinder at the outer sideof the other ram, substantially as and for the purposes described.

4. In ingot-extracting apparatus, the combination of a suspended andupwardly-movable cylinder, a plunger arranged therein, and liftingappliances, substantially as and for the purposes described. i

5. The combination of a lifting-motor, laterally-movable links or armsconnected with the lifting-motor and adapted to be raised thereby, andindependently-acting mechanism connected with the arms and adapted tospread them, substantially as and for the purposes described.

6. The combination, with pivotally-mounted links or arms andalifting-plunger, of toggle-levers connected with the links or arms, aplunger operative to move the toggle-levers, and a collar mounted on thelast-named plunger and connecting the toggle-levers, substantially asand for the purposes described.

7. In ingot-extracting apparatus, the combination, with the cylinder 5,of rams arranged therein, one inside the other, one of said ramsprojecting downwardly and adapted to engage the ingot, liftingappliances on the other ram, and fiuidconnections by which thelast-named ram may be raised independently of the other, substantiallyas and for the purposes described.

8. In ingot-extracting apparatus, the combination, with the cylinder 5,of rams 7 and 9 arranged therein, one inside the other, a yoke securedto the ram 9, and links depending from the yoke, substantially as andfor the purposes described.

9. In ingot-extracting apparatus, the combination, with the cylinder 5,of rams 7 and 9 arranged therein, one inside the other, a yoke securedto the rain 9, links depending from the yoke, and toggle-leversconnecting the links and adapted to be operated by one of these rams,substantially as and for the purposes described.

10. In ingot-extracting apparatus, the combination, with the cylinder 5,of rams 7 and 9 arranged therein, one inside the other, links,toggle-levers connecting the links and adapted to be operated by one ofthese rams, and a collar on the other ram connecting the tog gle-levers,substantially as and for the purposes described.

11. The combination, with the ram 9, having a shoulder or recess 17formed thereon, of a yoke made in sections fitted around the ram andsecured together, and depending links, substantially as and for thepurposes described.

12. in 111 got-extracting apparatus, the com bination of the suspendedand upwardlymovable cylinder, rams 7 and 9 contained therein, aliuid-supply pipe entering the cylinder between the heads of the ramsand fluidsupply pipes entering at the ends of the cylinder, one of therams having a projecting end adapted to engage the ingot and the otherram having lifting appliances for the mold, substantially as and for thepurposes described.

13. In ingot-extracting apparatus, the combination of the cylinder, rams7 and 9 contained therein, a fluid-supply pipe entering the cylinderbetween the heads of the rams and fluid-supply pipes entering at theends of the cylinder, oneof the rams having aprojecting end adapted toengage the ingot, and the other rain having lifting appliances for themold, substantially as and for the purposes described.

14. In ingot-extracting apparatus, the combination of the cylinder, rams7 and 9 contained therein, a fluid-supply pipe entering the cylinderbetween the heads of the rams, and fluid-supply pipes entering at theends of the cylinder, one of the rams havinga projecting end adapted toengage the ingot and the other ram having lifting appliances for themold, and an external guide for the ram, substantially as and for thepurposes .described.

15. In ingot-extracting apparatus, the combination,with a ram adapted tofit on the ingot, of a removable shoe for the ram, substantially as andfor the purposes described.

16. In ingot-extracting apparatus, the combination, with two adjacentcylinders having lifting-rams, of an interposed guide-bar, and guidesfor the rains, substantially as and for the purposes described.

17. In ingot-extracting apparatus, the comtween the heads of the rams,and fluid-supply pipes entering at the ends of the cylinder, one oftherams having a projecting end adapted to engage the ingot and theother ram having lifting appliances for the mold, substantially as andfor the purposes described.

19. In ingot-extracting apparatus, the combination of an elevatedtrolley, a racking-cylinder connected with the trolley and adapted tomove it back and forth, an upright cylinder carried by the trolley andhavingaplungeradapted to engage the ingot, and moldsuspending devicesalso carried by the trolley and situated in proper position to suspendthe mold directly under the plunger, substantially as and for thepurposes described.

20. The combination of the mold-lifting and stripping cylinder,aracking-cylinder, and adjacent cars, one carrying the mold and ingotbeneath the cylinder and the other adapted to receivethe mold when thelifting-cylinder is moved; above the same by the racking-cylindjer,substantially as and for the purposes, described. I

21. In ingot-extracting apparatus,.the com- I bination, with a verticalram adapted to bear I onthe ingot, of a second mold-lifting ram, 5

f my hand this 7th day of substantially as and for the purposesdescribed.

22. In ingot-extracting apparatus, the combination of a mold-lifting ramhaving links got and in its vertical motion to engage and 5 spread thelinks or arms, substantially as and for the purposes described- 24:. Iningot-extracting apparatus, the com- I binatiomwith laterally-movablelin ksor arms and a lifting-ram, of an ingotrrestrainin g ram,a collarmounted thereon and adapted to be moved by the ram, and toggle-leversconi meeting the collar with the links or arms, substantially as and forthepurposes described.

In testimony whereof I have hereunto set May, A. D. 1890. HENRY AIKEN.Witnesses:

THOMAS W. BAKEWELL,

W. B. OoRWIN.

